Compensating gear.



PA'HINTEDY Nov. 6, 1906 E. J. GOULD. GOMPENSATING GEAR. APPLIOATION FILM? M123, 190s.

- A TTRNEYS UNITED STATES lEDWIN GOULD, OF BOULDER, COLORADO.

. Specification of Letters Patent.

ooMPENsATiNG GEAR.

Patented Nov. 6, 1906.

Application led January 22, 1.906. Serial No. 297.343-

To all whom, it may concern:

'Be it known that I EDWINGJ. GOULD, a citizen of the United States, residing at Boulder, 1n the county of Boulder and State of Colorado, have invented a new and useful Compensating Gear, of which the following is a specification.

This invention relates to gearing and is designed to provide an imv roved compensating gear wherein gear-teetlii are dispensed with and positive interlocking ofthe parts is insured without liability of breakage thereof and the required backward movements of certain of the parts is permittedin a prompt and thoroughly-efficient manner.

In lieu of gears having teeth I employ ecl centries and links, which are so arranged as to positively transfer power from the drive elements to the shaft-sections and which are, furthermore, arranged to permit backward movements of the eccentrics within thev links cated condition. v

to permit of the'shaft or axle sections running at different rates of speed.

A very important feature of the invention resides in having the drive element which is to be coupled to an engine or other suitable source of power constitute a case for con# taining and housing the links and eccentrics, whereby these elements are not exposed to accumulations of dirt and the effects of the.

weather, wherefore the present gear may be effectually maintained in the desired lubri- With these and vother objects in view the present invention consists in the combination and arrangement of parts,..as will be hereinafter m'ore fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it beingunderstood that changes in the form, proportion, size, 4and minor details may beI made within the scope of the claims without departing from the spirit or'sacriiicing any ofthe ad-A iantages ofthe invention. f

in the drawings, .Figure 1 is a face'view of ii'ie present compensating gear having one of thel combined case and drive sections removed to disclose the links and eccentrics, portions of the latter being broken away to show the ball-races and antifriction-balls. Fig. 2 is a cross-sectional view of -the gear.

Similar numerals of reference designate corresponding drawings.

parts in both figures of theV The cas-e for housing the operating parts of the present compensating gear is made up of4 two cylindrical alf-sections 1 and 2, -which have their rims abutted and detachably connected by means of bolts or other'fa'stenings 3, piercing the ends or heads of the case. These case-sections are provided,respectively, with central openings 4 and 5 for the rotatable reception of the respective shaft or axle sections 6 and 7, which are of course in longitudinal alinement. The shaft-section 6 is provided at its inner end with an eccentric 8, integral or. otherwise disposed to work Within the case-section l, and a similar eccentric 9 is carried by the inner' end of the shaft-section 7 and works within the case-section 2.

It will here be explained that the case-sections 1' and 2, in addition to housing the other elements of the gear, constitute the'drive ele- -ment and may be provided with gear-teeth secured to a separate gear or otherwise arranged to be coupled to an engineV or other source of power. In other Words, the power is iirst applied to the case and then transferred .from the latter, through the links and eccentrics, to the shaft-sections.

Cooperating with the ecfentric 8 is a flat link 10, which is provided at its inner end witha circular opening or seat 11, loosely embracing the eccentric and constituting an eccentric-strap. At the middle of this link there is a cylindrical stud or rejection 12, working in a radial slot 13, flermed in the drive-section 1. The outer end ofthe link 10 is provided with a circular opening 14, so as to forni an eccentric-strap embracing` the iin-,iiilier 158L of the double eccentric 15, the other member 15b of which is ofcourse disposed diametrically opposite the member] 5a.

At the opposite sideoftlie eccentric. S there is a flat link 16, which is a substantial duplicate of the link 10, its inner end being proy vided with an opening 17, receiving the eccentric 8, and its outer end having an opening double eccentric 19, the other eccentric incinber 19b being located diainetrically opposite the eccentric member 19u. A cylindrical 18, receiving the eccentric member 19 of the stud or pro'ection 20 is carried by the outer side of the link 16-s`ubstantially midway of its ends and works in a radial slot 21, as explained for the link S. y I the drawings, it will be noted that the inner overlapped end portions ofthe linksl pS` and 16 As shown. in Fig. 2 of 'lio or bolts 30 and 31 piercing the dou are laterally reduced so that their combined loosely receiving the eccentric members b and 191.

Between the 'peri hery of each eccentric and the circular waliJportion of the adjacent link there is a series of antirictiQn-balls 26, the eccentric being provided with a ball-race 29 and the circular wall of the link being provided with a ball-race 28, whereby friction between these parts is reduced to the minimum.

Edgewise movements other than rotary movements of the double eccentrics is prevented by me'ans of the respective ivot pins le eccentrics and the sections of the drive element, whereby the double eccentrics are connected to turn about fixed centers.

Inlpractice, the links being in any relation* for instance, in parallelism,l as shown inFig. 2-power is app ied to the case, and the latter, together with the links and eccentrics, turn asa whole around the axis of the case-by reason of the fact that the case, links, and eccentrics are positively connected throu h the medium of the pivotins and 31. S ould the rate of rotation o either shaft or axle-section be retarded-'for instancefin the case of a motor-vehicle making a turn-that shaftsection which is retarded is practically turn- 1n 1in a `rearward' direction, and its leccentric wi .its eccentric 9 will be shifted backward in itsadjacent link.

Ii it is the shaft-section 'Z which is' retarded, also be retarded, thereby endwise, which swings the double eccentrics in a backward direction, thereby tilting and swinging the links 10 and l16 upon their pivots 12 and 20, which slide the slots 13 and 21, thereby accommodatshifting .the link 22 in ing for the diierent relations between the eccentrics 8 and 9. Should it be the shaft-section 6 which is retarde its eccentric 8 will also be retarded, thereby ivotally shifting the links l1() and 16, the djouble eccentrics, and the link 20, so as to compensate for the change in the relation between the eccentrics 8 and 9. When the vehicle completes the turn and is runnin straight ahead, th'e shafts or axle-sections wi l be simultaneously driven at the same rate of speed with the links and eccentrics in the relation assumed at the end of the retardi'ng or backward movement of one or the other of the shaft-sections.`

It will of course be understood that when the rotary movement of either of the eccentrios 8 and 9 is retarded and the links 7shift in the manner hereinbefore described the rotary movement ofthe other eccentric-will be is claime -tween the eccentrics and the openings in the links, this is not absolutely necessary. Furthermore, instead of having the members of each double eccentric disposed diametrically opposite they can have other relations Without imparing the effectiveness of the device. Having1 thus described the invention, what 1s 1. A compensating gear comprising separate driven'elements, a drive element concentric with the driven elements, eccentrics upon the driven elements, double eccentricshaving their members respectively alined with the eccentrics of the driven elements, a link provided with openings respectively receiving one of the driven eccentrics and corresponding members of the double eccentrics, and a pair of links having their inner ends embracing the other driven eccentrics and their outer ends embracing the other respective members of the double eccentrics, said pair of links having a radial slidable connection with the drive elements and also capable of pivotal movements upon their slidable connection.

2. A compensating gear comprising a drive element having a central opening and diametrically o posite radial guideways, separate driven e ements alined with the opening in the drive element and provided with eccentrics, a pair of links having their inner ends overlapped and embracing one of the eccentrics, each link having a slidable and pivotal connection with one of the guideways, a pair of double eccentrics having corres ending meinb'ers embraced by the outer en s of the links, and another link having its middle portion embracing the other driven eccentrics and its ends embracing the other corresponding members of the double eccentries.

3. A compensating gear comprising a ro tary case constituting a drive element, driven elements concentrically piercing the case and provided with eccentrics within the case, a pair i links having their inner ends overlapping and embracing one of the eccentrics, each link having a radially-slidable and pivotalconnection with the case, double eccentrics with corresponding members embraced by the outer ends of the respective links, and ya single link having its middle portion embracing the other driven eccentric with its ends embracing the other correspondingr members of the double eccentrics.

4. A compensating gear comprising a case constituting the drive element, driven elefments rotatably piercing the sides of the case, and compensating elements liouscd sating elements including eccentrics and links embracing the same.

5. A compensating gear comprising a drivey element,' se arate driven elements `independent of the rive'element and provided with eccentrics, pairs of double eccentrics pivotally supported upon the drive'element, a link havin a series of openings receiving one of the friven eccentrics land corresponding members ofthe double eccentrics,` and a pair of links having openings receiving the otherJ ldriven eccentric and the other members of the double eccentrics, each member of the pair of links having a slidable pivotal connection with the drive member..

A'com'pensating gear comprising a drivegear, double eccentrics pivotally carried by the gear, separate driven elements having `ec centrics, and links having openings receiving l .the respective driven eccentrics and corresponding members vof the double eccentrics."

7. A compensating gear comprising a drivegear, driven elements, and eccentricsand eccentric links forming the connection between the drive-gear and thedriven elements.

In testimony that I claim the foregoing as my own I have hereto aflixed my signature in the presence of two witnesses.

. .V EDWIN J. GO-ULD.

Witnesses:

T. R. RICE, J. L. FOX. 

